Cinematographic apparatus



2 Sheets-Sheet. 1

filing W K(Yt g0ff7112-71aq/T' @3 13, ex. flu W H. KUPPENBENDER ET AL CINEMATOGRAPHIG APPARATUS Filed Dec.

pri 24, 1934.

April 24,1934." H. KUPPENBENDER ET AL 1,956,391

I CINEMATOGRAPHIG APPARATUS Filed Dec. 16, 1930 2 Sheets-Sheet 2 Patented Apr. 24, 1934 UNITED STATES CINEMATOGRAPHIG APPARATUS Heinz Kiipp enbender and Kurt Hollmann,

Dresden, Germany Application December 1 In Germany D 2 Claims.

'This invention relates to improvements in I cinematographic apparatus, and it .is the principal object of the invention to provide an aggregate or attachment for said apparatus allowing the use of films of varying widths, standard width and narrow or wide widths on. the app'aratus together with the film feed and pressure rollers co-operating therewith.

In the present apparatus of this kind the exchange of the film rollers istime consuming and tedious and while it has been proposed to employ stepped feed rollers for films-of varying widths. the use of the same required a change in their widths'or an exchange of the feed and pressurerollers which is also very inconvenient.

These disadvantages are successfully overcome by the present invention providing an aggregate of film guiding and feeding means, which can quickly be exchanged as a whole.

Another object of the invention is the provision of an attachment of this type which is equipped with means for securely holding the attachment to the apparatus so as to withstand all strains to which it may be subjected during the operation.

A further object of the invention is the provision of an attachment for cinematographic apparatus of comparatively simple and therefore inexpensive construct-ion, yet durable and highly efficient in operat'on.

These and other objects and advantages of my invention will become more fully known as the description thereof proceeds and will then be specifically defined in the appended claims.

In the accompanying drawings forming a material part of this disclosure, the invention is shown in diagrammatic views, and:

Fig. 1 is a front elevation of a cinematographic apparatus or attachment allowing a ready exchange of the film guides for standard film and wider or narrower film widths.

Fig. 2 is a detail view of the aggregate or attachment.

Figs. 3 and 4 show detail views of conveyer rollers of varying gage and the pressure rollers co-operating therewith.

Fig. 5 s a detail elevation of a securing means for the conveyer on a somewhat enlarged scale.

Fig. 6 is a section on line 6 6 of Figure 5.

As illustrated in Figures 1 to 4. the aggregate orattachnient A comprises the film way or path- 1 equipped with the guides 2 carrying the various pressure rollers 3.

It will be clear that with the various machines the aggregates or attachments will vary in the 6, 1930, Serial No. 502,713 ecember 18, 1929 width of the film way, the size of-the windows and in the gage of the pressure rollers.

It will be clear that during the operation the film way and its rollers will be subjected to con-' siderable mechanical strain, and it will, therefore. be necessary to provide reliable fastening means. which, however, should allow a ready-and convenient -change of the film guide or way with its rolls.

In Figures 5 and 6 such means .are illustrated which show the film guide body 1 provided with a longitudinal bore 10 in which a bolt 9 is engaged.

The body'l is secured to this bolt by means of a screw bolt 4 having a stout collar 5 arranged within a depression 6 of the body. A plate 7 overlaps the collar 5 and is screwed to body 1.

This construction allows a removal of the film way or guide from the bolt after removal of the screw.

Lateral displacement of the body 1 is furthermore prevented by its suspension fromthe bolt 8.

The operation of the device will be fully understood from the above description thereof by simul taneous inspection of the drawings, and it will be clear that the film way or guide with its cooperating rollers and parts can be readily attached to a cinematographic apparatus and detached therefrom by the removal of the screw bolt 4, and by lifting it from the suspension bolt 8 so that it can be conveniently exchanged for a film way for films of standard, narrower, or wider width. The securing means will hold the aggregate or attachment to the apparatus so that the same can withstand all strains the same may be subjected during operation.

It will be understood that ,we have shown and described the preferred forms of our device only as examples of the many possible ways to practically construct the same, and t hat we may make such changes therein as come within the scope of the appended claims without departure from the spirit of our invention. I

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is: j

1. In a cinematographic projec having its film advancing sprocket wheels permanently combined with said apparatus andadapted to feed films of varying widths having perforations of varying distances a readily interchangeable aggregate consisting of a film guide body adapted to be exchangeably attached to the apparatus in proper relation to said sprocket wheels, picture window and pressure rollers tion apparatus means for interchangeably attaching said aggregate to the-apparatus, said means comprising a bolt engaging in the longitudinal bore of said guide body, a screw bolt engaging said bolt, a collar on said screw bolt in the depression of said guide body, and a plate overlapping said collar screwed to said guide body.

Immz KUPPENBENDER.

KURT HOFFMANN. 

